Shortly after getting the car, it also became obvious that adding wiper fluid was a real issue. For some reason the new fluid wouldn’t flow downwards in the reservoir, it would just sit at the top of the filter for two minutes before slowly running down.
Adding more fluid, even small quantities, was rather unpleasant. Just something shy of a hundred millilitres would take more than five minutes.
The weird thing was - it would only happen when my father, the previous owner, didn’t look. So it seems that the car was cursed.
I had some suspicions about the filter being the culprit, but I couldn’t get it out, and with the fear of breaking brittle plastic I left it like that for almost a year.
Until July this year, with the preparations for the MOT, all fluids had to be okay.
With some pliers I took out the rather stuck filter, and it became clear what was causing the problems. Some weird transparent sticky goo on both sides clogged the filter, leaving very little room for the fresh wiper fluids.
No wonder I couldn’t fill it up.
After a quick wipe down with a cloth, and some scrubbing with a screw driver, new wiper fluid went through the filter without a problem.